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Author Question: Consider an infinite population with a mean of 160 and a standard deviation of 25 . A random sample ... (Read 132 times)

MirandaLo

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on: Jun 24, 2018
Consider an infinite population with a mean of 160 and a standard deviation of 25 . A random sample of size 64 is taken from this population. The standard deviation of the sample mean equals:
 a. 25 c. 25/64
  b. 25/64 d. None of these choices.

Question 2

The probability distribution of the error variable is normal, with mean E() = 0, and standard deviation  =1.
  Indicate whether the statement is true or false


xiaomengxian

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Reply #1 on: Jun 24, 2018
Answer to Question 1

C

Answer to Question 2

F


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MirandaLo

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Reply #2 on: Jun 24, 2018
Thank you :)


xiaomengxian

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Reply #3 on: Jun 24, 2018
Happy to help you


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